21143460

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27107}}^1$

素因数の和:27132

約数の個数: 48

約数和(自身を含む): 63758016

約数和(自身を除く): 42614556

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 27107, 54214, 81321, 108428, 135535, 162642, 271070, 325284, 352391, 406605, 542140, 704782, 813210, 1057173, 1409564, 1626420, 1761955, 2114346, 3523910, 4228692, 5285865, 7047820, 10571730, 21143460]

約数ペア:

[(1, 21143460), (2, 10571730), (3, 7047820), (4, 5285865), (5, 4228692), (6, 3523910), (10, 2114346), (12, 1761955), (13, 1626420), (15, 1409564), (20, 1057173), (26, 813210), (30, 704782), (39, 542140), (52, 406605), (60, 352391), (65, 325284), (78, 271070), (130, 162642), (156, 135535), (195, 108428), (260, 81321), (390, 54214), (780, 27107)]